In no grazed area,however,the plant biomass was the hightest and the habitat structure was benefit for the planticole grasshopper to seclect.

• 重牧后的栖境有利于蝗虫的发生，特别是有利于地栖型蝗虫的发生，而在不受放牧干扰、植物能自由生存下的栖境则有利于植栖型蝗虫的发生。